I'm using Ubuntu 10.04 and I want to virtualize Mac 10.6.3, but when I try to start the machine, a message that was not properly initialized the VT-x/AMD-V: But this option is enabled.Full error message: Hardware acceleration VT-x/AMD-V was enabled but not operational. Some guest systems (like OS / 2 and QNX) require this feature to work.Make sure you have enabled features VT-x/AMD-V correctly in the BIOS of the host computer.